Reversible changes in the reflectivity of different types of fibre Bragg gratings

Journal Article · Thu Dec 09 04:00:00 EST 2010 · Quantum Electronics (Woodbury, N.Y.)

DOI:https://doi.org/10.1070/QE2010V040N10ABEH014385· OSTI ID:21541844

Gnusin, P I; Vasil'ev, Sergei A; Medvedkov, O I; Dianov, Evgenii M ^[1]

---

1. Fiber Optics Research Center, Russian Academy of Sciences, Moscow (Russian Federation)

We have studied strain- and temperature-induced reversible changes in the reflectivity of different types of fibre Bragg gratings. The results demonstrate that the strain sensitivity of the reflectivity of type I and IIa Bragg gratings is mainly due to the photoinduced reduction in the elasto-optic coefficient p{sub 12} of the core glass and that its temperature sensitivity results from the increase in the thermo-optic coefficient of the glass. UV exposure of fibres loaded with molecular hydrogen has an insignificant effect on these material coefficients. We also analyse the effects of UV fluence and germanium concentration in the fibre core on the reversible changes in the reflectivity of the grating. (optical fibres)

• OSTI ID: 21541844
• Journal Information: Quantum Electronics (Woodbury, N.Y.), Journal Name: Quantum Electronics (Woodbury, N.Y.) Journal Issue: 10 Vol. 40; ISSN 1063-7818
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ELEMENTS
FIBERS
GERMANIUM
GLASS
GRATINGS
HYDROGEN
METALS
NONMETALS
OPTICAL FIBERS
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
REFLECTIVITY
SENSITIVITY
STRAINS
SURFACE PROPERTIES
TEMPERATURE DEPENDENCE